Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Piston Ring, Engine

Pistons

(1)The classification is marked on the top of the piston.

Piston Rings

Upper compression ring 0.030-0.070 mm
Lower compression ring 0.030-0.070 mm
Oil control ring assembly 0.038-0.142 mm
Upper 1.200 -0.010/-0.030 mm
Lower 1.500 -0.010/-0.030 mm
Spring 1.510 ± 0.020 mm
Rail 0.460 ± 0.011 mm
B6284T
Diameter 23.000 ± 0.004 mm
Length 61.000 ± 0.200 mm
B6294S
Diameter 21.000 ± 0.004 mm
Length 57.000 ± 0.200 mm